<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
   <form action="https://www.bilibili.com/">
    账号：<input type="text" name="user"placeholder="输入数字">
    密码：<input type="password" name="pass" autofocus>
    <input type="submit">
    <input type="reset">
   </form>
</body>
</html>